Dallas BPC 157 Therapy Injury Healing Support I've been using Pentadecapeptide (PDA) and the results have been unreal. this peptide is almost identical to BPC 157 with the exception of an additional marginate salt, which has contributed to PDA IS REPLACING MY FAVORITE PEPTIDE BPC 157. , Well the FDA screwed up several peptides for a lot of us BUT We have just gotten our hands on an almost identical peptide called PDA or Pentadeca The Stable Gastric Pentadecapeptide BPC 157 Pleiotropic Beneficial Activity and Its Possible Relations with Neurotransmitter Activity